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palisade parenchyma

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noun Botany.
  1. the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of photosynthesis.
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Origin of palisade parenchyma

First recorded in 1880–85
Also called palisade, palisade mesophyll.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018